include/sys/vdev_raidz.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (C) 2016 Gvozden Neskovic <neskovic@compeng.uni-frankfurt.de>.
  23  */
  24
  25 #ifndef _SYS_VDEV_RAIDZ_H
  26 #define _SYS_VDEV_RAIDZ_H
  27
  28 #include <sys/types.h>
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 struct zio;
  35 struct raidz_row;
  36 struct raidz_map;
  37 #if !defined(_KERNEL)
  38 struct kernel_param {};
  39 #endif
  40
  41 /*
  42  * vdev_raidz interface
  43  */
  44 struct raidz_map *vdev_raidz_map_alloc(struct zio *, uint64_t, uint64_t,
  45     uint64_t);
  46 void vdev_raidz_map_free(struct raidz_map *);
  47 void vdev_raidz_generate_parity_row(struct raidz_map *, struct raidz_row *);
  48 void vdev_raidz_generate_parity(struct raidz_map *);
  49 void vdev_raidz_reconstruct(struct raidz_map *, const int *, int);
  50 void vdev_raidz_child_done(zio_t *);
  51 void vdev_raidz_io_done(zio_t *);
  52
  53 /*
  54  * vdev_raidz_math interface
  55  */
  56 void vdev_raidz_math_init(void);
  57 void vdev_raidz_math_fini(void);
  58 const struct raidz_impl_ops *vdev_raidz_math_get_ops(void);
  59 int vdev_raidz_math_generate(struct raidz_map *, struct raidz_row *);
  60 int vdev_raidz_math_reconstruct(struct raidz_map *, struct raidz_row *,
  61     const int *, const int *, const int);
  62 int vdev_raidz_impl_set(const char *);
  63
  64 typedef struct vdev_raidz {
  65         int vd_logical_width;
  66         int vd_nparity;
  67 } vdev_raidz_t;
  68
  69 #ifdef  __cplusplus
  70 }
  71 #endif
  72
  73 #endif /* _SYS_VDEV_RAIDZ_H */